Identify the domain or context of “HA”
Determine whether “HA” means horizontal asymptote, harmonic average, hemagglutinin, or another term
If you mean horizontal asymptote, compare the degrees of the numerator and denominator
If the numerator degree is less than the denominator degree, the horizontal asymptote is y = 0
If the numerator degree equals the denominator degree, the horizontal asymptote is the ratio of leading coefficients
If the numerator degree is greater than the denominator degree, there is no horizontal asymptote
If you mean another type of “HA,” use the definition specific to that subject
Check the formula or problem statement for the exact meaning of “HA”